WA Sender allows you to begin a chat with someone without having their phone number saved in your phone's address book.
-> Select country code receiver from the dialog box.
-> Enter the phone number.
-> Click the 'Open Chat' button.
Now Send text messages, photos, videos or any files without having their phone number saved in your phone's address book.
Credits:
Icons made by:
Smashicons - "https://www.flaticon.com/authors/smashicons" from www.flaticon.com
Freepik - "https://www.flaticon.com/authors/freepik" from www.flaticon.com